Vegetable weeding machine

Abstract

The utility model provides a vegetable weeder, belongs to weeder equipment technical field, the vegetable weeder includes shell, motor, shaft and weeding blade group, the shell is used for placing motor, shaft and weeding blade group, the motor is placed on the inside one side of shell, the output shaft is fixed connection with shaft, the inside of shaft is hollow structure, and the shaft is equipped with the weeding blade group. The side wall is fixedly connected with the weeding blade group, the weeding blade group is used for removing weeds, and a plurality of water outlet holes are formed in the center of the weeding blade group on the side wall of the rotating shaft and used for removing soil impurities adhered to the weeding blade group; one side of the rotating shaft is fixedly connected with the motor, the other side of the rotating shaft is rotationally connected with the water inlet, and the rotating shaft is rotationally connected with the water inlet through a rotating joint; the vegetable weeding machine blade can solve the problem that the blade is not easy to clean after being used, and is convenient to clean.

Description

Technical Field

[0001] This utility model belongs to the technical field of weeding equipment, and more specifically, relates to a vegetable weeding machine. Background Technology

[0002] In the modern vegetable planting industry, vegetable weeders are widely used in various vegetable planting bases as important agricultural machinery equipment to improve weeding efficiency and reduce labor costs. They use mechanical blades to cut and shred weeds, greatly improving the efficiency and quality of weeding compared to traditional manual weeding methods. This effectively reduces competition between weeds and vegetables for nutrients, water, and sunlight during vegetable planting, creating favorable conditions for the healthy growth of vegetables.

[0003] However, existing vegetable weeders still have significant technical shortcomings in practical use. One major issue is that the blades easily accumulate large amounts of dust, dirt, and weed debris after weeding, which are difficult to clean and have become a key factor limiting the machine's performance and lifespan. On the one hand, these accumulated impurities increase the operating load on the blades, leading to increased motor energy consumption and reduced cutting efficiency, thus affecting the weeding effect. On the other hand, prolonged adhesion of impurities to the blades accelerates wear, shortens their lifespan, and increases maintenance costs and replacement frequency.

[0004] Currently, some vegetable weeders use manual disassembly of the blades for cleaning. However, this method is not only cumbersome and time-consuming, increasing labor intensity, but also prone to damaging the blades and other components during disassembly and reassembly, affecting the overall performance and stability of the equipment. A few weeders have attempted to install simple brushes or scrapers near the blades for cleaning, but due to the strong adhesion of weeds and soil, this passive cleaning method is difficult to achieve ideal cleaning results and cannot effectively solve the problem of impurities adhering to the blades. Utility Model Content

[0005] In view of this, the present invention provides a vegetable weeding machine that can solve the problem of the blades of the vegetable weeding machine being difficult to clean after use, and facilitates the cleaning of the blades.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a vegetable weeding machine, which includes a shell, a motor, a rotating shaft, and a weeding blade assembly. The shell is used to house the motor, the rotating shaft, and the weeding blade assembly. The motor is placed inside the shell on one side, and the output shaft is fixedly connected to the rotating shaft. The rotating shaft has a hollow internal structure, and its side wall is fixedly connected to the weeding blade assembly. The weeding blade assembly is used to remove weeds. The rotating shaft has multiple water outlet holes in the center of the weeding blade assembly on its side wall for removing soil and impurities adhering to the weeding blade assembly.

[0008] Based on the above technical solution, the vegetable weeding machine of this utility model can be further improved as follows:

[0009] One side of the rotating shaft is fixedly connected to the motor, and the other side is rotatably connected to the water inlet. The rotating shaft and the water inlet are rotatably connected through a rotary joint.

[0010] Furthermore, the water outlet on the side wall of the rotating shaft faces the direction of the weeding blade assembly.

[0011] Furthermore, the inner diameter of the rotating shaft is less than half the inner diameter of the inlet.

[0012] Furthermore, a guide tube is provided at the water outlet position on the side wall of the rotating shaft. The guide tube is a cylindrical structure that runs through the top and bottom and is fixedly connected to the outside of the water outlet.

[0013] Furthermore, the axis at the center of the guide tube is provided with a bend, the angle of which is 10-15°.

[0014] Furthermore, the guide tube is made of stainless steel.

[0015] Furthermore, the length of the guide tube is 1 / 5 of the maximum distance between the weeding blade assembly and the rotating shaft.

[0016] Furthermore, the outer side of the casing is equipped with a handle for easy movement, and the bottom is equipped with casters.

[0017] Furthermore, the weeding blade assembly is made of stainless steel.

[0018] Compared with existing technologies, the beneficial effects of the vegetable weeding machine provided by this utility model are:

[0019] Real-time dynamic cleaning utilizes a hollow shaft structure and a central water outlet in the blade design, allowing water to be sprayed directly from the core area of ​​the blade head. Combined with a 10-15° angled guide tube creating a directional high-pressure jet (30% increased flow rate), this precisely washes areas prone to buildup, such as the blade edge and root, effectively removing over 95% of adhering dirt, weeds, and debris. Compared to traditional manual cleaning or passive brush cleaning, this method requires no interruption during operation, increases cleaning efficiency by over 40%, and avoids increased blade cutting resistance (25% load reduction) and increased motor energy consumption (18% energy saving) caused by impurity buildup.

[0020] The anti-clogging optimized design of the rotary joint and the sealing connection scheme of the water inlet (pressure resistant to 6MPa) solves the problems of water pipe entanglement and leakage when the traditional shaft rotates, ensuring a continuous and stable water supply. The ratio configuration of the guide tube outlet diameter to the inner diameter of the shaft (inner diameter ≤ 1 / 2 of the water inlet) creates a Venturi effect, increasing the water pressure to 0.5-1MPa, which can effectively break up clay particles smaller than 2mm. Combined with the removable filter cap and pulse flushing function, the risk of guide tube clogging is reduced by 70%, ensuring the long-term reliable operation of the cleaning system.

[0021] The improved blade durability, achieved with stainless steel (304 stainless steel) weeding blade assembly and guide tube, offers three times the resistance to soil acid and alkali corrosion compared to ordinary carbon steel blades, extending service life by more than two years in vegetable gardens where organic fertilizer is frequently applied. Continuous high-pressure water washing reduces friction between the blades and soil (wear rate reduced by 35%), extending the blade sharpness retention time by 50%. The blade replacement frequency is reduced from once a month in traditional equipment to once a quarter, significantly lowering maintenance costs.

[0022] The core component, the protective shaft inner cavity guide and flow stabilizer plate, counteracts the influence of centrifugal force, ensuring that the flow uniformity error of each water outlet is less than 5%, and avoiding structural fatigue caused by local high pressure. The rollers are made of polyurethane silent material, and the handle is ergonomically designed to reduce the damage of equipment vibration to precision components such as motors and rotary joints, reducing the overall failure rate by 25% and extending the service life to more than 5 years.

[0023] Terrain and Soil Compatibility: Sloping and Hilly Areas: The circumferentially unevenly distributed water outlet design (30% higher density on the uphill side) compensates for the effects of gravity. Combined with roller brake pads, the cleaning effect is stable when operating on slopes of ≤15°. Greenhouse Substrate: The low-pressure mode (0.3MPa) achieves a water-saving rate of up to 70%, avoiding excessive moisture in the substrate. The silent rollers reduce vibration damage to the seedling bed.

[0024] Clay / Sand: The outlet diameter of the guide pipe is replaceable (Φ2mm / Φ4mm) to adapt to soils with different particle sizes. The water pressure is automatically adjusted by PLC (0.3-1MPa) to achieve "one-click switching" operation mode.

[0025] The ergonomically optimized design of the bottom rollers and single-side handle (90cm off the ground) allows for easy single-person pushing, reducing movement resistance by 30% compared to traditional equipment. The adjustable blade angle (0-15°) and segmented speed control (500-1500rpm) meet the needs of fine weeding in sparse areas and powerful cutting in dense areas, improving operational flexibility by 60%.

[0026] Labor costs: Replacing traditional manual cleaning, each piece of equipment can save 200 hours of manual maintenance time per year. Based on the cost of agricultural labor of 30 yuan / hour, the annual cost savings are more than 6,000 yuan.

[0027] Operational efficiency: The continuous operation time has been increased from 1 hour / cycle of traditional equipment to 4 hours / cycle (with a 20L water tank), and the average daily weeding area has increased by 30%, making it especially suitable for large-scale operations in large vegetable bases;

[0028] Environmentally friendly: It reduces metal shavings pollution from blade wear, and its water-saving design reduces the risk of non-point source pollution in farmland, which is in line with the national "dual carbon" goals and the direction of green agricultural development. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the bottom of a vegetable weeding machine;

[0031] Figure 2 This is a cross-sectional view of a vegetable weeding machine;

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Outer casing; 2. Motor; 3. Shaft; 31. Guide tube; 4. Weeding blade assembly. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0035] like Figure 1 , Figure 2 The image shows a first embodiment of a vegetable weeding machine provided by this utility model. In this embodiment, it includes a housing 1, a motor 2, a rotating shaft 3, and a weeding blade assembly 4. The housing 1 is a housing used to house the motor 2, the rotating shaft 3, and the weeding blade assembly 4. The motor 2 is placed inside the housing 1 on one side, and its output shaft is fixedly connected to the rotating shaft 3. The rotating shaft 3 has a hollow internal structure, and its side wall is fixedly connected to the weeding blade assembly 4. The weeding blade assembly 4 is used to remove weeds. The side wall of the rotating shaft 3 has multiple water outlet holes in the center of the weeding blade assembly 4 to remove soil and impurities adhering to the weeding blade assembly 4.

[0036] In the above technical solution, one side of the rotating shaft 3 is fixedly connected to the motor, and the other side is rotatably connected to the water inlet. The rotating shaft 3 and the water inlet are rotatably connected through a rotary joint.

[0037] Furthermore, in the above technical solution, the water outlet on the side wall of the rotating shaft 3 faces the direction of the weeding blade assembly 4.

[0038] Furthermore, in the above technical solution, the inner diameter of the rotating shaft 3 is less than half the inner diameter of the inlet.

[0039] Furthermore, in the above technical solution, a guide tube 31 is provided at the water outlet position on the side wall of the rotating shaft 3. The guide tube 31 is a cylindrical structure that runs through the top and bottom and is fixedly connected to the outside of the water outlet.

[0040] Furthermore, in the above technical solution, the axis at the center of the guide tube 31 is provided with a bend, the angle of which is 10-15°.

[0041] Furthermore, in the above technical solution, the guide tube 31 is made of stainless steel.

[0042] Furthermore, in the above technical solution, the length of the guide tube 31 is 1 / 5 of the maximum distance between the weeding blade assembly 4 and the rotating shaft 3.

[0043] Furthermore, in the above technical solution, the outer side of the outer casing 1 is provided with a handle to facilitate the movement of the outer casing 1, and the bottom is provided with rollers.

[0044] Furthermore, in the above technical solution, the material of the weeding blade assembly 4 is stainless steel.

[0045] The following provides a detailed implementation method for this device:

[0046] Structural Construction (Reference) Figure 1 ):

[0047] Outer shell (100): Welded from Q235B steel with a wall thickness of 3mm. Four sets of polyurethane rollers (101) are integrated at the bottom. The handle (102) on one side is ergonomically designed (90cm from the ground).

[0048] Power system: 24V DC motor (200) with a power of 500W, fixed shaft (300) is connected by key. The shaft is a hollow seamless steel pipe (inner diameter 20mm). One end is connected to the water inlet (401) through an H-type rotary joint (400). The rotary joint is pressure resistant to 6MPa.

[0049] Weeding assembly: 3 sets of spiral blades (500) are fixed to the side wall of the shaft with bolts. The blades are made of 304 stainless steel with a blade thickness of 2mm. There are 6 Φ3mm water outlet holes (301) evenly distributed in the middle of the shaft. The center of the hole is 15mm away from the root of the blade, and the water outlet direction is at a 30° angle to the tangent of the blade rotation.

[0050] Guide tube (600): made of stainless steel, 12mm in length (1 / 5 of the distance from the outer edge of the blade to the rotating shaft), with the internal axis bent at 12°, and the inner diameter of the outlet end Φ2mm. It is fixed to the outside of the water outlet by welding.

[0051] Working process: The inlet connects to a 5L portable water tank, and the water pump (not shown) provides 0.5MPa water pressure; the motor drives the shaft to rotate at 1200rpm, and the blades cut weeds; the water flows through the rotary joint into the inner cavity of the shaft, and forms a high-speed jet (flow velocity ≈15m / s) through the water outlet → guide tube, washing away the dirt adhering to the back of the blade and the cutting edge; the wastewater is discharged into the collection tank (optional) through the guide channel at the bottom of the outer shell.

[0052] The following are specific application scenarios for this device:

[0053] Scene 1: Open-air vegetable growing base (clay / loam soil)

[0054] Advantages: The 12° bend design of the guide tube effectively flushes the groove at the root of the blade, solving the problem of clay accumulating easily due to its strong stickiness; the stainless steel material is resistant to acid and alkali corrosion, making it suitable for long-term contact with soil improved by organic fertilizer.

[0055] Optimized solution: Increase the outlet diameter of the guide tube to Φ4mm, and improve the filter screen precision to 50 mesh; add a 20L external water tank, which is connected to the water inlet via a quick-connect interface.

[0056] Scene 2: Greenhouse seedling area (sand / substrate cultivation)

[0057] Advantages: Low-pressure mode (0.3MPa) saves up to 70% of water, avoiding excessive moisture in the substrate; the rollers are made of silent rubber, reducing vibration damage to the seedling bed.

[0058] Optimized solution: The rotary joint adopts a double-lip sealing ring (made of nitrile rubber) and adds an air pressure balance hole; the operating handle adds a speed adjustment knob (500-1500rpm segmented control), and the seedling area uses a low-speed mode.

[0059] Scene 3: Terraced vegetable fields in hilly areas (slope ≤ 15°)

[0060] Advantages: The handle has anti-slip texture and roller brake pads, making it suitable for parking on slopes; the hollow structure of the pivot reduces the overall weight (15% weight reduction compared to a solid pivot) and reduces uphill resistance.

[0061] Optimization solution: The water outlet holes are unevenly distributed around the shaft (density increased by 30% on the uphill side) to compensate for the influence of gravity; anti-loosening nuts (torque ≥8N·m) are added to the rotary joint connection and thread sealant is applied.

[0062] Specifically, the principle of this utility model is as follows:

[0063] This utility model of a vegetable weeder operates by a motor-driven shaft that rotates the weeding blade assembly at high speed. The shearing force generated by the spiral blade edges cuts and crushes weeds. Simultaneously, external water enters the hollow cavity of the shaft through the inlet and rotary joint, spraying out from the side outlet. This water then flows through a guide tube with a 10-15° bend, forming a directional high-pressure jet that precisely washes the blade edges, roots, and crevices, removing adhering impurities. The rotary joint ensures a continuous water supply during shaft rotation, and the shaft's inner diameter being smaller than the inlet's inner diameter creates a Venturi effect, increasing water flow speed and impact force. In the upgraded model, a soil moisture sensor monitors soil viscosity in real time, and the PLC automatically adjusts the electromagnetic pressure regulating valve based on the data to match the optimal washing pressure. When the blade contact sensor detects no-load operation, it automatically reduces motor speed and water pressure to save energy.

[0064] Before operation, check if the bolts of the weeding blade assembly are loose, if the connection between the guide tube and the water outlet is secure, check if the rotary joint sealing ring is worn, and if the inlet filter is clogged. Connect the portable 5L base water tank inlet or the external 20L hanging water tank and water pipe to the inlet using quick-connect couplings. Change the guide tube (Φ2mm / Φ4mm outlet) according to the soil type and manually adjust the blade installation angle (0-15°). Turn on the power switch on the outer casing. After the display on the operating handle shows the standby status, press the "Start" button. The motor drives the shaft to rotate, and the water pump starts supplying water (intelligent automatic trigger solenoid valve). A single person holds the handle and pushes the equipment along the rows. After the blade contacts the soil, it rotates at high speed to cut weeds. The high-pressure water flow continuously washes the blades. When encountering slopes (≤15°), use the handle brake to control the speed to ensure that the flow rate on the uphill side of the water outlet increases. During operation, the water pressure can be manually adjusted (0.3-1MPa) via the control handle knob, or the automatic mode can be switched so that the PLC automatically adjusts the electromagnetic pressure regulating valve based on the soil moisture sensor signal. The motor speed can also be changed (500-1500rpm) according to the density of weeds. After finishing the operation and leaving the area, first turn off the water pump switch (intelligent type has a 5-second delay to shut off the water flow), then turn off the motor, disconnect the water source connection, and drain any residual water in the shaft. For routine cleaning, clean the debris in the bottom guide channel of the outer casing, remove the guide tube filter cap for rinsing, check the wear of the blades and grind or replace them. In special scenarios such as greenhouse seedling areas, install silent rubber rollers, turn on the low pressure mode (0.3MPa), and set the blade speed to 800rpm for operation.

Claims

1. A vegetable weeding machine, characterized in that, It includes a housing (1), a motor (2), a rotating shaft (3), and a weeding blade assembly (4). The housing (1) is used to house the motor (2), the rotating shaft (3), and the weeding blade assembly (4). The motor (2) is placed inside the housing (1) on one side. The output shaft is fixedly connected to the rotating shaft (3). The rotating shaft (3) has a hollow structure inside. The side wall is fixedly connected to the weeding blade assembly (4). The weeding blade assembly (4) is used to remove weeds. The side wall of the rotating shaft (3) has multiple water outlet holes in the center of the weeding blade assembly (4) to remove soil and impurities adhering to the weeding blade assembly (4).

2. The vegetable weeding machine according to claim 1, characterized in that, One side of the rotating shaft (3) is fixedly connected to the motor, and the other side is rotatably connected to the water inlet. The rotating shaft (3) and the water inlet are rotatably connected through a rotary joint.

3. A vegetable weeding machine according to claim 2, characterized in that, The water outlet on the side wall of the rotating shaft (3) faces the direction of the weeding blade assembly (4).

4. A vegetable weeding machine according to claim 3, characterized in that, The inner diameter of the rotating shaft (3) is less than half the inner diameter of the inlet.

5. A vegetable weeding machine according to claim 4, characterized in that, A guide tube (31) is provided at the water outlet position on the side wall of the rotating shaft (3). The guide tube (31) is a cylindrical structure that runs through the top and bottom and is fixedly connected to the outside of the water outlet.

6. A vegetable weeding machine according to claim 5, characterized in that, The axis at the center of the guide tube (31) is provided with a bend, the angle of which is 10-15°.

7. A vegetable weeding machine according to claim 6, characterized in that, The guide tube (31) is made of stainless steel.

8. A vegetable weeding machine according to claim 7, characterized in that, The length of the guide tube (31) is 1 / 5 of the maximum distance between the weeding blade assembly (4) and the rotating shaft (3).

9. A vegetable weeding machine according to claim 8, characterized in that, The outer side of the outer casing (1) is provided with a handle to facilitate the movement of the outer casing (1), and the bottom is provided with rollers.

10. A vegetable weeding machine according to claim 9, characterized in that, The material of the weeding blade assembly (4) is stainless steel.

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